<button class="button">
  <span class="span">About us</span>
  <span class="span">Hello!</span>
</button>
<style>
/* From Uiverse.io by gharsh11032000 - Tags: gradient, button, hover effect */
.button {
  position: relative;
  border: none;
  color: #e8e8e8;
  background: #333333;
  font-weight: 600;
  font-size: 20px;
  text-transform: uppercase;
  height: 60px;
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0, 0, 0,0.2);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
  overflow: hidden;
}

.button .span {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all 0.6s cubic-bezier(0.23, 1, 0.320, 1);
  transition-delay: 0.6s;
}

.button:hover .span:nth-child(1) {
  transform: translateY(-100%);
  transition-delay: 0s;
}

.button:hover .span:nth-child(2) {
  transform: translateY(-100%);
  transition-delay: 0s;
}

.button:before {
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: linear-gradient(-45deg, #fc00ff 0%, #00dbde 100% );
  transform: scaleX(0);
  transition: all 0.6s cubic-bezier(0.23, 1, 0.320, 1);
  transition-delay: 0;
  transform-origin: left;
}

.button:hover::before {
  transform: scaleX(1);
  transition-delay: 0.6s;
}

.button:active {
  box-shadow: none;
}



        
</style>
